Multiple unit jacket cooler



April 8, 1941. ou; 2,237,516

MULTIPLE UNIT JACKET COOLER Filed July 12, 19:59

2 Sheets-Sheet 1 April 8, 1941.

F. M. YOUNG 2.237.516 MULTIPLE UNIT JACKET COOLER Filed July 12, 1959 I 2 Sheets-Sheet 2 22 B as 36 45 42 [4 K W i I v VE/V TOR Patented Apr. 1941 UNITED STATES PATENT OFFICE MULTIPLE UNIT JACKET COOLER Fred M. Young, Racine, Wis. I Application July l2, 1939, Serial No. 282,937

2 Claims.

' Diesel engines wherein the radiator cores are separate self contained units and are mounted at one end of a rigid frame, the frame having a fan and. a coolant circulating pump mounted thereon and receiving power for driving the fan and pump either from the engine served or from an electric motor or otherwise.

The principal object of the present invention is to provide a heat exchanger comprising anumber of separate units being detachably secured together one over the other and having detachable operating connections therebetween in a manner whereby the cooling liquid may' travel direct through the individual cores in series or otherwise.

One of the objects of the present invention is to provide a number of cores having vertically positioned headers and horizontally positioned tubes and means whereby adjacent tube plates may be detachably secured together so as to form a series with a medial header.

A still further object of the present invention is to provide a structure which may be moved about on its base and be suitably secured to almost any kind of foundation wherein the device will be more satisfactory than if made part of the engine installation or fastened to the engine foundation.

I To these and other useful ends my invention consistsof parts combinations of parts, or their equivalents. and mode of operation, as hereinafter set forth and claimed and shown in the accompanying drawings in which: v

Fig. 1 is a front elevation of the preferred form of my invention.

Fig. 2- is a fractional detail view illustrating the manner of fastening the upper and lower pairs of cores to ther.

Fig. 3 is an end view further illustrating the manner of securing the units together as in Figure 2.

Fig. 4 is an end view of the device as illustrated in Figure 1.

Fig. 5 is afractional detail view of the-manher of securing the tube plates together so as to 'form an intervening header between individual 5 cores.

F-S of Figure. 5.

Fig. 7 is a horizontal view taken on line 1-1 of Figure 5.

Fig. 8 is an enlarged detail view of the fasten'ing between the frame and the bottom ends of the headers of units C and D.

Fig. 9 is a fractional transverse section of unit B taken on line 9--9 of Figure 1.

As thus illustrated, I havedesignated the four individual cores in their entirety by reference characters A, B, C and D. These cores are secured together in a manner as will hereinafter appear.

The frame of my device consists of two side base members Ill-ll being secured together at their front ends preferably by means of an inverted U-shaped channel II which also acts as a supporting means for the circulating pump as will hereinafter appear.

The rear ends of frame members In are secured together by means of an inverted U-shaped channel I! (see dotted lines) the ends of which are preferably welded to members Ill. Thus members II and I2 act to securely hold members I! in spaced relation forming a rigid supporting frame upon which to mount the other members of the unit.

The present invention differs somewhat fro conventional heat exchangers in that thetubes are horizontally positioned and the core consists preferably of the four separate units A, B, C and. D which are designed and detachably se cured together as follows:

Each unit comprises preferably horizontally positioned tubes l5 having a multiplicity of close- -are provided which are secured lyspaced fins ll through which the tubes extend, the tube ends extending through tube plates l1 and beingsuitably bonded thereto.

The four edges of the tube plates extend a distance from the outer tubes to thereby provide room for gaskets I! which are adapted to register with a rectangular frame 18 to which the tube plates are secured by means of strips 20 and spaced bolts 2| as illustrated in Figures 5, 6 and 7. Thus when core units A and B or C and D are secured together, medial headers are provided as illustrated in these figures.

I provide end header caps 22 to which tube plates IT at the end of each pair of cores arev bound and sealed by means of gaskets l9, bars 20 and spaced bolts 2l.' Thus when headers 22 are secured to the ends of each pair of cores as illustrated in Figures 1 and 4, two complete units together and interconnected as follows:

Headers 22 are each preferably provided with screw threaded inlet and outlet openings as at 25. The ends of the headers are somewhat flat-* tened as at 26 (see Figures 2 and 8). The bottom ends of the headers on units C and D rest on frame members ID as illustrated in Figure 8 and are slidably secured thereto by means of bolts 21 and washers 28, the bolts passing through enlarged openings 29 and rubber sleeves 30. The sleeves are held into position by means of tubes 3| which are welded to frame members l as illustrated. Thus free expansion and contraction are permitted between cores C and D and the frame.

It will be noted that members 22 are duplicates. The cores also are duplicates, thus manufacturing and servicing are simplified. I provide an inverted channel 35 to which the bottom ends of headers 22 of units A and B are secured by means of bolts 36, washers 31 and an em larged opening 38. Thus to provide a substantial fastening but permit unequal expansion and contraction between unitsA and B and channe 35.

Another channel 39 is similarly secured to the tops of the headers of units C and D. Members 35 and 39 are held in spaced relation by means of sleeves l0 and bolts ll. I provide a strip of rubber 42 which forms an air seal between members 35 and 39.

Thus it will. be seen that pairs of cores are firmly secured together and the assembly is firmly held to the frame of the device and that the individual headers and cores may be easily detached and replaced.

By referring to Figure 1 it will be seen that an inverted channel 45 is secured to the top of the headers of units A and B. The flanges of the channel extend downward so as to shield the corners of the cores and improve the appearance of the device. A similar means 4'5 is provided for shielding the bottom edges of cores C and D.

I provide an inlet connection 50 having a connection to the header at 25 and to a surge tank and B and C and D is shown in Figures 1 and 4 and comprises upper pipe fittings 52 and lower fittings 53. distance apart and connected together bymeans of rubber hose 5! thus to provide for unequal expansion and contraction. Thus, as illustrated, the cooling fluid will pass through units B and A, thence through these connections to the header of unit C thence to outlet 25 of the header on unit D.

In the present design, it will be seen that each header is provided with a pipe screw threaded opening at the front of each end as at 25. Connections are made between certain of these openings; In Figure 1 the top connections of The ends of the pipes are spaced a.

One form of connection between units A' each of the right hand headers are operatively connected by means of L-fittings, pipes 52 and 53 and hose 54. The lower connection on the left hand lower header is operatively connected through the top cores A and B and then through the bottom cores C and D and thento the pump from whence a pipe connection leads from 60 to the bottom of the engine water jackets. Clearly the eight pipe threaded connections as at 25 provide convenient means for variously connecting the pump and jacket to the cores and for optionally operatively connecting the cores.

I provide a fan shroud 65 having a wire mesh protecting guard 68. End members 51 are suitably secured to frame bars l0 and the headers of members C and D and are connected together on their forward upper corners by means of a tube 68 preferably by electric welding.

Braces 69 are secured to the bottoms of members 61 adjacent members It] and to tube 68 a distance from the longitudinal center of this member thus to securely brace member 68 against longitudinal movement. A suitable fan having blades 51 is rotatably mounted on tube 68 as illustrated. The .upper front corners of members 61 are securely tied .to headers 22 of members A and B by means of braces 10. Thus members A and B are securely held against transverse movement or vibration.

The fan shaft and pump 58 are provided preferably with multiple groove V-belt sheave pulleys having V-belt operating connections.- The remaining grooves on the fan sheave are adapted to receive driving belts as illustrated in Figure 1.

Thus it will be seen that the present invention is adapted to be made in sizes suitable for the largest engine units. That it is neat in appearance, simple, strong and easily manufactured and assembled. That the heat exchange core is made in four detachable parts and that these parts are connected in series.

Having thus shown and described my invention, I claim: I

1. A unitary heat exchanger of the class described, comprising a rigid unitary supporting frame, two radiator units one above the other each having unitary vertically positioned spaced headers which are operatively connected by a I number of horizontally positioned tubes, a multiplicity of closely spaced fins through which said tubes extend, at least one of the bottom pair of headers at their lower ends being horizontally yieldingly mounted on said frame, the bottom ends of said upper pair of headers being secured to an inverted channel, another inverted channel secured to the top ends of said bottom headers, said two channels 'being spaced and secured togetherv at their ends, horizontal slidable means between said upper and lower headers whereby their tubes may expand and contract independently, an inlet connection in the top of one of the top headers, operating connections between the other top header and its adjacent bottom header and an outlet connection at the bottom of the other bottom header.

2. A device as recitedin claim 1 including; a strip of yielding material positioned betweensaid channels to thereby act as an air seal therebetween.

- FRED M. YOUNG. 

